LED lamp and street lamp using the same

Abstract

A light-emitting diode (LED) lamp and a street lamp using the same are provided. The LED lamp includes substrates for mounting an LED, reflectors, radiators, a mounting frame, a power source, and a top cover. The substrates and the reflectors are mounted on the radiators. Each of the substrates has a condenser cup mounted around a light-emitting surface of the LED, and the condenser cup has a curved wall for condensing light rays emitted by the LED to a certain angle range; each of the reflectors has a curved surface for performing a second time reflection condensing on the light rays that are processed through the reflection condensing by the curved wall. The LED lamp realizes uniform lighting in the whole lighting range through performing reflection twice, thereby achieving excellent directivity of illumination, uniform brightness, eliminating the glare phenomenon, and achieving desirable heat dissipation performance.

What is claimed is: 
     
       1. A light-emitting diode (LED) lamp, comprising:
 substrates for mounting an LED, 
 reflectors, 
 radiators, 
 a mounting frame, 
 a power source, and 
 a top cover, 
 the substrates and the reflectors are mounted on the radiators, 
 wherein, each of the substrates has a condenser cup mounted around a light-emitting surface of the LED, and the condenser cup has a curved wall for condensing light rays emitted by the LED to a certain angle range through performing reflection condensing for a first time; and 
 each of the reflectors has a curved surface for performing a second time reflection condensing on the light rays that are processed through the reflection condensing by the curved wall. 
 
     
     
       2. The LED lamp as defined in  claim 1 , wherein each of the radiators has a plurality of heat dissipation fins arranged in a horizontal direction, and the heat dissipation fins extend along a direction perpendicular to a ground surface. 
     
     
       3. The LED lamp as defined in  claim 1 , wherein the curved wall has a shape for condensing light rays emitted by the LED to a range of 0 degree to α degrees, and α is any angle smaller than 60 degrees. 
     
     
       4. The LED lamp as defined in  claim 3 , wherein a lower end of the curved wall reflects incident light rays emitted by the LED into light rays having an included angle of a degrees with respect to a line of zero degree; and
 an upper end of the curved wall reflects incident light rays emitted by the LED that are larger than or equal to a degrees into light rays parallel to the line of zero degree. 
 
     
     
       5. The LED lamp as defined in  claim 1 , wherein the curved surface of each of the reflectors has a vertical curvature for reflecting light rays from a plurality of LEDs along a vertical direction into a first predetermined range, and
 in the first predetermined range, a ratio of a number of LEDs distributed in each position to a number of the LEDs along the vertical direction is in direct proportion to a square of a distance from the position to the LED. 
 
     
     
       6. The LED lamp as defined in  claim 1 , wherein the curved surface of each of the reflectors has a horizontal curvature for reflecting light rays from a plurality of LEDs along a horizontal direction into a second predetermined range, and
 in the second predetermined range, a ratio of a number of LEDs distributed in each position to a number of the LEDs along the horizontal direction is in direct proportion to a square of a distance from the position to the LED. 
 
     
     
       7. The LED lamp as defined in  claim 1 , wherein the substrates include first and second substrates, the reflectors include first and second reflectors, and the radiators include first and second radiators,
 wherein the first substrate, the first reflector and the first radiator are mounted on a first side of the LED lamp, and 
 the second substrate, the second reflector and the second radiator are mounted on a second side of the LED lamp opposite to the first side; and 
 the first and second radiators are mounted at opposite outer sides of the LED lamp, 
 the first and second reflectors are mounted at opposite inner sides of the LED lamp, 
 the first substrate is mounted between the first radiator and the first reflector on the first side of the LED lamp, and the second substrate is mounted between the second radiator and the second reflector on the second side of the LED lamp. 
 
     
     
       8. A street lamp, wherein the street lamp using the LED lamp as defined in  claim 1 .